Advertising and like device



G. BRIGGS 1,913,870

ADVERTISING AND LIKE DEVICE June 13, 1933.

Filed July 24., 1931v 4 Sheets-Sheet 1 Briggs NT K L @QATTORNEY.

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June 13, 1933. 7 G. BRIGGS l$313,870

ADVERTISING. AND LIKE DEVICE FiledJuly 24, 1931 4 Sheets-Sheet 2 w 931PENCIL 1 Xxx TIME ABC.

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Ill/l I BQQQAWL 4w ATTORN E y June 13, 1933. G. BRIGGS 1,913,870

ADVERTISING AND LIKE DEVICE I Filed July 24, 1931 4 Sheets-Sheet 3@corgc. QQS

INVENTOR NG M June 13, 1933.

' G. BRIGGS ADVERTISING AND LIKE DEVICE Filed July 24, 19314,Sheets-Sheet 4 e r qe ENTUR Wk w ATTORNEY Patented June is, 1933UNITED STATES PATENT oFncE GEORGE BRIGGS, OI IAIDA vain, I IONDON,ENGLAND, LSSIGNOB OI ONE-EAL! TO VALENTINE mm, 01' LONDON, ENGLANDADVERTISING AND LIKE DEVICE Application filed July 24, 1931, Serial Io.552,858, and in Great Britain July 80, 1930. g

This invention relates to improvements in to be moved step by step. Themaking and advertising and like devices, and has for its chief object toprovide an attractlve and novel advertising device. The device, ac-

cording to the present invention, in addition to its value as an.attractive advertising device as such will also have the advantage thatthe correct time is shown by the same, the time and the advertisementconveniently be ing co-related so as to connect the advertise- 'mentwith the time, the displayed advertisement, for example, advertisingsome article, device, or commodity which will-have articular use orapplication at the time at w ich it is shown.

The apparatus, according to the present invention, is characterized inthat the advertisement, picture, legend or the like, and the timeindication, are displayed together by the device, the advertisement,picture, legend or the like and the time indication being carried by thesame medium, and means belng pro-- vided for controlling the movement ofsaid medium from clockwork mechanism so that the same shall be moved todisplay a fresh advertisement and time indication at every given periodof time.

The medium carrying the advertisement or the like, and the timeindication, may com prise lantern slides, a travelling band of paper,cloth or the like or a stencil which operates electrical contacts, butpreferably comprises a film, the picture spaces of which contain theadvertisements or the like and the time indication.

The apparatus, according to the present invention, utilizing a film,comprises a suitable projector being arranged to project the image upona convenient screen and is characterized in that an indication of thetime is carried on the same film as the advertisement,

means being provided to control the movement of the film carryingtheadvertisements and the time indications in the required manner. Y

The means for controlling the movement of the film preferably compriseclock mechanism, electrically or mechanically operated,

- which clock mechanism is employed to make and break an electriccircuit to cause the film indication may be combined with flashingdifferently coloured lamps, in order to enhance the advertising valueand may be proected on to the same screen as the advertisement and timeindication or on to a separate screen as desired. i

it must be emphasized that the clock mechamsm, according to the whichmay be spring, pen ulum or otherwise operated, plays no part in the timeindication except that of controlling. the stepstep movement of thefilm. No image of tlie hands of the clock is projected on to the screen,since 'the required time indication, which may be in the form of a clockor words or figures indicating the time, is actually on the film itself.

In order that this invention may be the more clearly understood andreadily carried into effect, I will proceed to describe the same withreference to the accompanying drawings which illustrate by way ofexample and not of limitation one convenient, embodiment of thisinvention andin which Figure 1 is a front elevation of the advertisingand time indication device according to the present invention, embodiedin a casing of the shapeof a conventional grandfather clock.

Figure 2 is a rear elevation of the device with the back cover removedin order to expose the mechanism.

Figure 3 is a central vertical section on line 33 of Figure 1.

Figure 4 is a view showing a portion of the film used inthe presentinvention.

Figure 5 is a fragmentary view showing the controlling mechanism for theelectric resent invention,

motor which in this construction is employed to drive the projector.

Figure 6 is a view showing the manner in which the clock mechanism is emloyed to control the making and breaking o the electrical circuit.

Figure 7 is a rear elevation of part of the upper portion of themechanism shown in Figure 2, this mechanism being that for giving theseconds-indication and also for completing the electric circuit to themotor control mechanism shown in Figure ,5.

Figure 8 is a front elevation of the film spool-box with the coverremoved.

Figure 9 is a simplified wiring diagram of the apparatus, an

Figure '10 is a diagrammatic view showing a modified method ofcontrolling the film mechanism.

Referring now to the drawings, the device therein illustrated comprisesa casing a which I prefer-to make of the shape normally associated witha clock,as shown, as grandfather clocksince attention is thereby morereadily attracted to the device. Said casing a is provided with a maintranslucent screen a in the position normally occupied by the clockface. This screen a is utilized for the exhibition of the advertisementand the time indication. Above this main translucent screen a is afurther screen a which is utilized for the seconds-indication, while awindow a may be provided in the front of the casing below the mainscreen a to give flashing illumination and also to carry a constantadvertisement or legend.

The mechanism inside the casing comprises a projector b of any suitabletype, and driven by an electric motor, part of which is shown at b(Figure 3). The pro'ected beam from the rojector b is reflecte at rightangles (and? of course, vertically inverted) by an inclined mirror I)(Figure 3) and finally thrown on to the main screena to display theadvertisement.

The film 0 for the projector is contained I within a spool-box d whichis located just to is desired to display a different advertisement therear of the projector (see Figure 3), and is provided with a removablecover at (Figure 2). It will be appreciated that since it every halfminute throughout a period of, say, twelve hours (the remaining periodof twelve hours in each day being a repetition of the first period asregards time), it is necessary to have no less than 1440 differentadvertisement spaces. The film must, therefore, be in the form of anendless. band so that it may run continuously. The length of 'filmrequired, therefore, requires some special provision for the storage ofthe same. Any suitable device may be provided for this storage of thefilm, but the special device which I have devised and which is shownmore particularly in Figure 8, is not simple but also very efiicient.

The film spool-box d is, as shown in Figure .8, provided with aplurality of rollers d which are mounted on screws d and have end onlyflanges d. The film c from the projector,

free mounting of the rollers d, the whole roll of film moves round as aunit, the incoming film being wound around the outside of the roll, andthe outgoing film being wound off the inside of the roll. There is thusvery little, if any, surface friction between adjacent layers of thefilm, and the chance of the film becoming scratched is reduced to aminimum.

Turning now to the control mechanism, this comprises clock mechanism ofany suitable type which is contained within a casing shown inrearelevation at e, Figure 2, 6 being the winding handle. This clockmechanism is adapted to drive a spindle f (Figure 6) to which is fixed atoothed wheel f. The spindle f is driven at the rate of one completerevolution per minute and thus corres onds to the minute hand spindle ofthe c ock mechanism. The toothed wheel f thus advances one tooth rsecond, and, engaging with the teeth t ereon, is one end of a bladespring contact f suitably mounted on the clock mechanism casing, or inany other suitable position. The free end of the blade spring contact frides over the teeth and every time it rides over a tooth is adapted tobreak contact with a further contact f in order to interrupt theelectrical circuit between the wires I which are connected to the bladespring contact f and the contact f. The connection between the wires fis thus completed once and broken once every second, since, when theblade sprin f falls between two teeth, the connectionfixetween the wiresf is made.

The wires f lead through a suitable source ofcurrent supply to themechanism shown in Figure 7 where they are connected to a solenoid orelectro-magnet g. The armature g of this electro-m'a et g is secured toone arm of a lever g which is pivoted at g on a suitable mounting plate9. 'Pivoted at the free end of the lever g is a awl g controlled by asprin g'. This paw g engages with a ratchet w e'el g to comprise a stepby step impulse mechanism, and overthrow is prevented by the adjustablescrew 9'. g is the energized once every second from the contacts 7, f(Fi ure 6), the ratchet wheel y will be turned t rough a completerevolution in a minute. Secured to the spindle of'the ratchet wheel 9 isa disc'k havin cut'near its periphery a ring or numbers 1 from 1 to 60,corresponding to the seconds, and since the disc It has imparted to itone sixtieth of a revolution each second, the numbers at the top of thedisc (or at any other part) Wlll change every second and will indicatethe passage of the seconds. This movement of the disc h is utilized ashereinafter explained. The disc h is also provided with a plurality ofwindows It covered with variously coloured gelatine or the like. Thepurpose of these coloured windows will be explained hereinafter.

Engaging with the back of the spring g is a nose carried by a bladespring contact 1' which is adapted to co-operate with another bladespring contact j in such a manner that, as the sprin g moves forward atthe end of the attractlon of the armature g by the electro-magnet g,the'contact is allowed to come into contact with the contact 7' in orderto complete the circuit between the same. When the armature g isattracted by the electro-magnet (which is only for a short space oftime), the pressure of the spring against the nose separates thecontacts j and j; and it will be seen it is only during that period oftime that the ratchet wheel g is at rest that the contact between j andjis completed. These contacts 1' and j are the seconds flashing contactsand will be so referred to hereinafter.

Carried by the ratchet wheel 9' are two outstanding pins 70 arrangeddiametrically osposite one another. These pins 1: are a apted to operateon contacts is and k so as to complete the circuit between thewires kfor a short space of time, (say, onesecond) It is, however, obvious thatsince the pins 70 are arranged diametrically opposite one another, and'since the ratchet wheel a" rotates once a minute, that the contacts Inand k will only be closed every half minute. These contacts, hereinaftertermed the motor control contacts are used to control the motor in thefollowing manner: The wires k lead, through a suitable source ofcurrent, to an electromagnet or relay Z (Figure =5), the armature l ofwhich is pivoted at Z The nose Z of thisarmature Z bears on a gappedwheel, part brought into contact with a contact I in order.

to complete the circuit between the same and a contact Z. The contacts Zand Z are included in the motor supply circuit, and it will thus be seenthat whenever the armature Z is attracted-.as it is every half minute byreason of the closing of the motor control contacts k the motor isoperated. Thearmature Z is released, the gap Z has moved clear of thenose of the armature. The nose of the armature thus rests on the edge ofthe wheel Z and this is arranged to be such that the motor circuit isstill completed as the armature has not fallen sufiiciently to open thecontacts Z, Z. The motor circuit is thus maintained complete until suchtime as the gap Z again comes below the nose of the armature Z, when thearmature Z will fall and break the connection between Z and Z. The motorcircuit is thus broken after the wheel Z has completed one revolution.The drive to the projector b is so adjusted that one revolution of thewheel Z corresponds to the feeding of the film forward a distance equalto one picture space. Thus, at every half minute, the picture in thegate of the projector is changed and conse uently, as above explalned,the. adverti ement shown on the screen a will be altered.

It is one of the essential features of the hands of which show thecorrect time, or thetime indication may be by way of figures or words.Obviously the advertisement and the time indication may be combined ina'very large number of ways, all ofwhichcomewithin the scope of thepresent invention which merely requires that the advertising matter andthe time indication shall be contained within the same picture space sothat only a single projector shall be required to show the advertisementand the time. No clock face is required, according to the presentinvention, from which the image may be projected, and if arepresentation of a clock or watch is used according to the presentinvention to show the time, the shape and pattern of the clock may varyfrom picture to picture, the only thing being that the hands of theclock are, in successive pictures, advanced half a minute since thepicture is changed every half minute.

Thus by means of the present invention an advertisement and anindication of the cor reht time is always shown on the screen a, theadvertising matter and the time preferably being co-related.

In addition to this very desirable and useful feature, the embodiment ofthis invention shown in the drawings is also adapted to show passage ofthe seconds. This'is carried out in the following manner :As abovedescribed, the disc h, which has stencilled around its periphery numbersfrom 1 to 60, is advanced one step every second and the stencilledfigure appearing at the top of the disc h is projected on to the centreof the upper screen a by means of the bulb an arranged within a casing m(Figure 3).v

The bulb m thus passes light through the upper-most figure, andan imageof the stencil is sharply focussed on to the screen a by the projectionlens m The bulb 'm; is wired in series with the seconds flashingcontacts j j so that the lamp flashes on every second. Thus every secondthe number appearing on the screen a is advanced one unit and so theseconds appear one after ent invention also provides for theflooding ofthe remaining portion of the screen a with diiierently coloured lights.Each half of the screen a may be flooded with differently colouredlights and this may be obtained by means of bulbs n (Figure 2) arrangedone on each side of the casing m these bulbs n shining through thecoloured windows k on to the screen o The win dows if being covered withcoloured gelatine and the disc 71, revolving step by step, variouscoloured illuminations will'be obtained which-will materially add to theattractiveness of'the device. The bulbs n are also wired in series withthe seconds flashing contacts j, so as to illuminate the screen a at thedesired intervals.

In addition, a further bulb 0 may be arranged behind the window a in thecasing, together with a bulb p, the bulb 0 being wired in series withthe seconds flashing contacts, and the bulb p in series with the motorcontrol contacts so that the bulb o fiashed every second and the bulb pevery half min Y ute.

Figure Qshows asimplified circuit diagram by means of which the variousoperations will be easily followed, like reference letters bein used forlike parts to facilitate sential as the supply may be taken from themains or from batteries alone and, if delalilfs.

any modifications may be made in the above described form withoutdeparting from the spirit of the present invention, thus, for example,the clockwork mechanism 0 may be replaced by any other suitable mechanism which is ada ted to give electrical impulses every second or, ifthe seconds indication is to be omitted, as it may in certainconstructions be, to give electrical impulses every half minute. Anyother type or shape of casing may be employed to house the apparatus,and in some cases the screen or screens, as the case may be, may beseparate from the remainder of the ap aratus, and advertisements andtime indications being projected on to the same in any suitable manner.Again, a number of devices, according to the present invention, may beused together and fed from a common impulse supply circuit which iscontrolled by a single clock mechanism or the like.

The film feeding mechanism may be modified as desired and, in thisconnection,

more particularly the motor operation described above, may be replacedby the solenoid or electr0-magnet operation illustrated in Figure 10 ofthe accompanying drawings.

In Figure 10 r is part of the projector and a is the film. Afterpassingthrough the gate of the projector r, the film 8 passes under a roller tand then over the lower feeding sprocket a which is provided with aratchet u The roller t is carried by a rod t which 'forms part of, or isconnected to the armature t of the solenoid t. t is a tension springwhich tends normally to raise the armature t against the pull of thesolenoid t. The solenoid is wired to the contacts Z and Z or k and sothat it is energized every half minrises under the action of the spring23, the

ratchet u is advanced one step to take up the length of film which hasbeen pulled down by the movement of the roller t. t is a back stop clickto prevent back-throw. By this simple means, therefore, the. film is fedforward one picture space every time the solenoid is operated, i. e.every half minute.

Various other fittings may be provided, such as a time switch to cut outthe illumination during certain hours, a switch for closihg themotor-or. solenoid circuit, in order to time.

Although it is preferred to change the advertisement and the timeindication every half minute, it will be obvious that the periods duringwhich the individual advertisements are displayed may be altered. Alsothe time indication need not be provided onall of the advertisements. 1

In place of the seconds flashing, above described, the same result maybe obtained by means of a ring of small bulbs surrounding the mainscreen a A control is then provided to light up a new bulb each second,while at the same time preferably maintaining alight those bulbs whichhave already been lit up. Thus at the first second after the minute, onebulb would be alight, at the second second two bulbs would be alight, atthe third second three bulbs and so on.

The resent invention is not limited to the use of Elms for carrying theadvertisements or the like, and the time indication, as several othermedia may be used. Thus, for example, I may, in place of the film,employ slides,

each of which, as in the case of the film above described, .carries anadvertisement or the like and a time indication. The slides are then fedto a projector one by one, say, every two minutes and a feeding arm orthe like is controlled from clockwork mechanism in such a manner as toremove that slide which has been exhibited and to substitute anew slidein the projector eve two minutes or at any other predetermine intervalof time. The slides ma be carried within the apparatus on an end essrunway and be arranged to approach the feeding mechanism under theaction of ravity.

Inanot er form of the resent'invention the advertisements, legen or thelike and the time indications may be carried by a nontranslucent band,the movement of which is controlled b clockwork mechanism, as abovedescribed. n this case, an image of the s ace on the band is projectedonto a screen y a suitable projector.

In a still further form of the present invention, the band itself,carrying in each s ace the advertisementor the like and the timeindication, ma be shown inthe appa ratus in which case t e movement ofthe band would be controlled from suitable clockwork mechanism,preferably in the manner de- .scribed above.

Again, in yet a further form, the-advertisements and time indication maybe carried by a stencil which is intermittently moved in accordance withthe time across electrical conwhereby said bear, in addition toadvertising matter, a time indication, a projector to project an imageof the film spaces on said fihn on to said screen, clock-work mechanismand means whereby said clock-work mechanism is adapted to actuate theprojector mechanism to advance the filmone picture space at eachpredetermined interval'of time.

2. An advertising device comprising 'a screen, an endless film, thepicture spaces of which bear, in additionto advertising mat-- ter,a-time'indication, a projector to project an image of the film spaces onsaid film on to said screen, clock-Work mechanism and means whereby saidclock-work mechanism is adapted to actuate the projector mechanism toadvance the film one picture space at each predetermined interval oftime.

3. An advertising device comprising a screen, an endless fihn havinthereon 1,440 picture spaces, each of which ears, in addition toadvertising matter, a time indication, a projector to project an imageof the film spaces on .said film. on to said screen, clockwork mechanismand means whereby said clock-work mechanism is adapted to actuate theprojector mechanism every halfminute to advance the film one picturespace at each actuation. l

4. An advertising device comprising a screen, a film, the picture spacesof which bear, in addition to advertising matter, a time indication, aprojector to project an image of the film spaces on said film on to saidscreen, clock-work mechanism, means clock-work mechanism is adapted toactuate the projector mechanism to advance the film one picture space ateach predetermined interval of time,.an auxiliary screen, a disc havingcut out near its periphery a sequence of sixty numbers, means for 5. Anadvertising device comprising -a I screen, a film, the picture s aces ofwhich bear, in addition to advertising matter, a time indication, aprojector to project an image of the film spaces on said film on to saidscreen, clock-work mechanism, means whereb said clock-work mechanism isadapte to actuate the projector mechanism to advance the film onepicture space at each predetermined interval of time, an auxiliaryscreen a spindle, a disc secured to said spindle having cut out near itsa sequence of sixty numbers, a rate et wheel riphery secured to saidspindle, a pawl adapted to engage said ratchet wheel and advance thesame step by ste an electro-magnet to cause movement of sand awl toadvance the ratimage of the film spaces on said film on to [said screen,an electric motor to drive said pro'ector, a air of contacts in thecircuit of sai motor, c ock-work mechanism, a seconds arbor to saidclock-work mechanism rotating once a minute, a disc on said secondsarbor,

two diametrically opposite pins on said disc adapted to engage saidmotor circuit contacts to close the motor circuit and so cause operationof the projector once every half minute to advance the film one picturespace, means for breaking the motor circuit after the projector hasoperated to advance the film one picture ace.

7. An advertising dbvice comprising a screen, a film, the picture spacesof which bear, in addition to advertising matter, a time indication, aprojector to project an image of the film spaces on said film on to saidscreen, an electric motor to drive said rojector, a relay, the contactsof which are included in the motor circuit, a pair of contacts 1n saidrelay circuit, clock-work mechanism, a seconds arbor to said clock-workmechanism rotating once a minute, a disc on said seconds arbor, twodiametrically opposite ins on said disc adapted to engage said re aycircuit c'ontactsto close the relay circuit and hence, by means of therela contacts, the motor circuit to cause operation of the projectoronce every half minute to advance the film one picture space, and meansfor breaking the motor circuit after the projector has operated toadvance the film one picture space.

8. An advertisingdevice compr' a screen, a film, the picture spaces ofwgich bear, in addition to advertising matter, a time indication, aprojector to project an image of the film spaces on said film on to saidscreen, an electric motor to drive said projector, a relay comprisi anelectro-magnet and an armature which y its movement is ada ted to closeand open the relay contacts w ich are included in the motor circuit, aair of contacts in said relay circuit, cloc -work mechanism, a secondsarbor to said clockwork mechanism rotating once a minute, a disc on saidsecondsarbor, two diametrically opposite pins on said disc adapted toengage said relay circuit contacts to close the relay circuit, andhence, by means of the relay contacts, the motor circuit to causeoperation of the projector once every half minute, a disc driven by theprojector motor havinga gap in its periphery, said disc being locatedunder the armature of the relay, a nose to said armature ada ted toengage in said gap, the arrangement Eeing such that when said relay isoperated to cause attraction of the armature the nose is lifted out ofthe gap and by reason of its bearing on the ungapped edge of the discprevents said armature falling, even after the relay circuit is broken,to break the motor circuit until such time as the gap a ain becomeslocated under the nose 'by w ich time the motor has caused the projectorto advance the film one picture space.

9. An advertising device comprising a screen a film, the picture spacesof which bear, in addition to advertising matter, a time indication, aprojector to project an image of the film spaces on said film on to saidscreen, an electric motor to drive said projector, a relay, the contactsof which are included in the motor circuit, a pair of contacts in saidrelay circuit, clock-work mechanism, a seconds arbor to said clock-workmechanism rotating once a minute, a disc on said seconds arbor, twodiametrically opposite ins on said disc adapted to engage said re aycircuit contacts to close the relay circuit and hence, bymeans of therelay contacts, the motor circuit to cause operation of the pro'ectoronce every half minute to advance t e film one picture space, means forbreaking the motor circuit after the projector has operated to advancethe film one picture space, an auxiliary screen, a disc having cut outnear its periphery a sequence of sixty numbers, means for rotating saiddisc by sixty intermittent steps each minute from saidclock-work-mechanism said sixty steps comprising a complete revolutionof the disc and meansdor projecting an image of one of the figures cutout from said disc on to said auxiliary screen.

10. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advertising matter, a timeindication, a projector to project an ima e of the film spaces on saidfilm on to sai screen, an electric motor to drive said rojector, arelay, the contacts of which are included in the motor circuit, a pairof contacts in said relay circuit, clock-work mechanism, a seconds arborto said clock-work mechanism rotating once a minute, a disc on saidseconds arbor, two diametrically opposite ins on said disc adapted toengage said re ay circuit contacts to close the relay circuit and hence,by means of the relay contacts, the motor circuit to cause operation ofthe pro'ector once every half minute to advance t e film one picturespace, means for breaking the motor circuit after the projector hasoperated to advance the film one picture space, a spindle, a discsecured to said.

spindle having cut out near its periphery a sequence of sixty numbers, aratchet wheel secured to said spindle, a pawl adapted to cuit of saidelectro-magnet, a seconds arbor to said clock-work mechanism and atoothed wheel on said seconds arbor adapted to engage with said contactsto make and break the same once each second to cause operation of saiddisc. I

11. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advert1sing matter, a timeindication, a projector to projectan image of the film spaces on saidfilm on to saidscreen, an electric motor to drive said projector, arelay comprising an electro-magnet and an armature which by'its movementis adapted to close and open the relay contacts which are included inthe motor circuit, a pair of contacts in said relay circuit, clock--work mechanism, a seconds arbor to said clock-work mechanism rotatingonce a minute, a disc on said seconds arbor, two diametrically oppositepins on said disc adapted to engage said relay circuit contacts to close7 minute, a disc driven by the projector motor .having a gap in itsperiphery, said disc being located under the armature of the relay, a.

the relay circuit, and hence, by means of the relay contacts, the motorcircuit to cause operation of the projector once every half nose to saidarmature adapted to engage in said gap, the arrangement being such thatwhen said relay is operated to cause attraction of the armature the noseis lifted out of the gap and by reason of its bearing on the ungappededge of the disc prevents said armature falling, even after the relaycircuit is broken, to break the motor circuit until such time as the gapagain becomes located under the nose by which time the motor has causedthe projector to advance the film one picture space, an auxiliaryscreen,.a disc having cut out near its periphery a sequence of sixtynumbers, means for rotating said disc by sixty intermittent ste s eachminute from said clock-work mechanlsm, said sixt steps comprising acomplete revolution of t e disc and means for projecting an ima e of oneof the figures cut out from said isc on to said auxiliary screen.

12. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advertising matter, a timeindication, a projector to pro ect an image of the film spaces on saidfilm on to said screen, an electric motor to drive said projector, arelay comprising an electro-magnet and an armature which by its movementis ada ted to close and open the relay contacts w ich are included inthe motor circuit, a air of contacts in said relay circuit, 01mechanism, a seconds arbor to saidclock- -work c work mechanism rotatingonce a minute, a disc on said seconds arbor, two diametrically oppositepins on said disc adapted to engage said relay circuit contacts to closethe relay circuit, and hence, by means of the relay contacts, the motorcircuit to cause operation of the projector once every half minute, adisc driven by the projector motor having a gap in its periphery, saiddisc being located under the armature of the re-- lay, a nose to saidarmature adapted to engage in said gap, the arrangement being suchsecured to sa1d spind e having cut out near its periphery a sequence ofsixty numbers, a ratchet wheel secured to said spindle, a pawl adaptedtoengage said ratchet wheel and advance the same step by step, anelectro-magnet to cause movement of said pawl to advance the ratchetwheel, a pair of con tacts in the circuit of said electro-magnet, aseconds arbor to said clock-workmechanism and a toothed wheel on saidseconds arbor adapted to engage witli said contacts to make and breakthe same once each second to cause operation of said disc.

13. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advertising matter, a timeindication, aprojector to project an image of the film spaces on saidfilm on to said screen, a solenoid, a core to said solenoid,. a rolleron said core engaging with said film, a relay, the contacts of which areincluded in the solenoid circuit, a air of contacts in said relaycircuit, cloc -work mechanism, a seconds arbor to said clockworkmechanism rotating once a minute, a disc secured to said seconds arbor,two diametrically opposite pins on said disc adapted to enga e saidrelay circuit contacts to close the re ay circuit and hence, b means ofthe relay contacts,the solenoi circuit .to cause the core to beattracted and-so advance the film one picture space.

14..An advertism device comprlsmg a screen, an endless Im, the lcturespaces .of which bear, in addition to a vertisin matendter, a timeindication, a case for sai less film, rollers in said case about whichthe film is arranged, one 100 passing out of said casing, a. projector.t rough which said'loop passes to project an image of the film 's aceson said film on to said screen, l kiork mechanism and means whereby saidclock-work mechanism is adapted to actuate the projector mechanism toadvance the film one picture space at each predetermined interval oftime.

15. An advertising device comprising a screen, an endless film hathereon 1,440

advance the film one picture space at each actuation.

16. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advertising matter, a

time indication, a case for said endless film,-

rollers in said case about which the film is arranged, one loop passingout of said casing, a projector to project an image of the film spaceson said film on to said screen, clock-work mechanism, means whereby saidclock-work mechanism is adapted to actuate the projector mechanism toadvance the film one picture space at each predetermined interval oftime, an auxiliary screen, a disc having cut out near its periphery asequence of sixty numbers, means for rotating said disc by sixtyintermittent steps each minute from said clock-work mechanlsm, saidsixty steps comprising a complete revolution of the disc and means forprojecting an image of one of the figures cut out from said disc on tosaid auxiliary screen.

17. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advertising matter, a timeindication, a case for said endless film,'rollers in said case aboutwhich the film is arranged, one loop passing out of said casing, aprojector to roject an image of the film spaces on said film on to saidscreen, clock-work mechanism, means whereby said'clock-work mechanism isada ted to actuate the projector mechanism to a vance the film onepicture space at each predetermined interval of time, an auxiliaryscreen, a spindle, a disc secured to said spindle having cut out nearits periphcry a sequence of sixty numbers, a ratchet wheel secured tosaid spindle, a awl adapted to engage said ratchet wheel an advance thesame step by step, an electro-magnet to cause movement of said pawl toadvance'the ratchet wheel, a pair of contacts in the circuit of saidelectro-magnet, a seconds arbor to said clockwork mechanism and atoothed wheel on said seconds arbor adapted to engage with said contactsto make and break the same once each second to cause operation of saiddisc.-

18. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advertisin matter, a timeindication, a case for said end ess film, rollers in said case aboutwhich the film is arranged, one loop passing out of said casing, aprojector to roject an ima of the film spaces on said film on to saiscreen, an electric motor to drive said projector, a pair of contacts inthe circuit of said motor, clock-work mechanism, a seconds arbor to saidclockwork mechanism, rotating once a minute, a disc on said secondsarbor, two diametrically opposite pins on said disc adapted to engagesaid mo'tor circuit contacts to close the motor circuit and so causeoperation of the projector once every half minute to advance the filmone picture space, and means for breaking the motor circuit after theprojector has 'operated to advance the film one picture space. I

19. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to advertising matter, a timeindication, a case for said endless film, rollers in said case aboutwhich the film is arranged, one loop passing out of said casing, a proector to ipro ect an image of the film spaces on said Im on to saidscreen, an electric motor to drive said projector, a relay comprising anelectro-magnet and an armature whic by its movement is adapted to closeand open the relay contacts which are included in the motor circuit, apair of contacts in said relay circuit, clock-work mechanism, a secondsapbor to said clock-work mechanismrotating once a minute, a disc on saidseconds arbor, two diametrically opposite pins on said disc adapted toengage said relay circuit contacts to close the relay circuit, andhence, by means of the relay contacts, the motor circuit to causeoperation of the projector once every half minute, a disc driven by theprojector motor havi riphery, said disc being coated under the armatureof the relay, a nose to said armature adapted to engage in said gap, thearrangement being such that when said relay is operated to causeattraction of the armature the nose is lifted out of the gap and byreason of its bearing on the ungapped edge of the disc prevents saidarmature falling, even after the relay circuit is broken, to break themotor circuit until such time as the gap again becomes located under thenose by which time the motor has caused the projector to advance thefilm one picture space.

20. An advertising device comprising a screen, a film, the picturespaces of which bear, in addition to ad ertising matter, a timeindication, a case for said endless film, rollers in said case aboutwhich the film is arranged, one loop passing out of said casin a proector to pro ect an image of the lm spaces on said film on to saidscreen, an electric motor to drive said projector, a relay compnsm turewhich y its movementis adapted to close a gap in its pe-v and open therelay contacts which are included in the motor circuit a pairof'contacts in said relay circuit, cloclr-work mechanism,-a secondsarbor to said clock-work mechanism rotating once a minute, a disc onsaid seconds arbor, two diametrically opposite pins on said disc adaptedto engage said relay circuit contacts to close the relay circuit, andhence, by means of the rela contacts, the motor circuit tocauseoperation of-the projector once every half minute, a disc driven by theprojector motor having a ga 'in its periphery, said disc being locatedundbr the armature of the relay, a nose to said armature adapted toengage in said ga the arrangement being such that when sai relay is 0rated to cause attraction of the armature t e nose is lifted out of thega and by reason of its bearing on the ungap edge of the disc preventssaid armature alling, even after the relay circuit is broken, to breakthe motor circuit until such time as the gapl a ain becomes locatedunder the nose by w ic time the motor has caused the projector toadvance the film one picture s ace, a spindle, a disc secured to saidspindle aving cut out near its riphery a sequence of sixty numbers, arate et wheel secured tosaid spindle, a pawl adapted to engage saidratchet wheel, and advance the same step by stop, an electro-m et tocause movement of said awl to vance the. ratchet wheel, a pair 0contacts in the circuit of said electro-magnet, a seconds arbor to saidclockworkmechanism and a toothed wheel on said seconds arbor adapted toengage with said contacts to make and break the same once each second tocause operation of said disc. In testimony whereof I have signed my nameto this specification. v GEORGE BRIGGS,

